add current year as starting year

#4

src/work-calendar.cpp

@@ -1,10 +1,20 @@
 #include <imgui.h>
 #include <imgui_internal.h>
+#include <time.h>
 
 #include "inter.h"
 
+//standard year
 int year = 2025;
 
+int get_current_year(){
+    time_t t = time(NULL);           
+    struct tm tm = *localtime(&t);   
+     
+    // tm_year is years since 1900
+    return year = tm.tm_year + 1900;
+}
+
 bool is_leap_year(int year) {
     return  ((year % 4) == 0 && (year % 100) != 0) || year % 400 == 0;
 }
@@ -62,6 +72,8 @@ void per_frame(){
         ImGui::TableNextRow();
         ImGui::TableSetColumnIndex(0);
         
+        year = get_current_year();
+
         ImGui::BeginGroup();
         if (ImGui::ArrowButton("##left", ImGuiDir_Left)) 
             year--;